Door/window signal transmitter for alarm systems



FIG. 1 is a perspective view of a door/window signal transmitter for alarm systems showing our new design, with the wire broken away to indicate indeterminate length;

FIG. 2 is a top plan view thereof;

FIG. 3 is a right side elevational view thereof, with the left side being a mirror image;

FIG. 4 is a bottom plan view thereof;

FIG. 5 is a rear elevational view thereof; and

FIG. 6 is a front elevational view thereof. 

The ornamental design for a door/window signal transmitter for alarm systems, as shown and described. 